Back to Main Page of Technical Dictionary of Printmaking acidityIn aqueous solutions, the condition wherein the concentration of hydrogen ions exceeds that of hydroxyl ions. See hydrogen ion concentration. In paper, the condition which results in an acid solution when the paper is treated or extracted with water. In testing paper for acidity, the specimen is extracted with water at room temperature or at 100°C, and the extract is tested to determine its pH or is titrated to determine the total amount of acid extracted from the paper.
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